[Public-List] A-4 Two blade propeller survey

[George Dinwiddie]

I have the stock 13x7 two-blade, and it works just fine.
Hull speed is around 1500 RPM, I think, but my tach hasn't worked for 
many years.
Thrust is fine in both forward and reverse, though not what Mike Lehman 
gets with his diesel 3-blade. But it's adequate.
Prop walk helps me turn the boat in tight quarters. I make sure I try to 
turn to starboard.
I've seen Phil Beigel back up a hundred yards or more, straight as an 
arrow. The key seems to be to get a lot of thrust at first, and then go 
to idle or neutral so the water flowing past the keel directs the boat 
in a straight line.

  - George

On 4/25/20 1:10 PM, charles pleisse via Public-List wrote:
> If your Alberg 30 has an Atomic 4 with a two blade prop,
> What diameter is you propeller?
> What is the pitch is your prop?
> At what RPM do you achieve hull speed?
> How content are you  with,
> forward thrust
> reverse thrust
> amount of prop walk
> 
> Charles Pleisse
> Sookie #221

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